Walking Decks
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Waterproof Walking Deck Systems for California Homes & Commercial Properties
Walking decks, balconies, and rooftop decks give you valuable usable outdoor space but because these surfaces are exposed to the elements, proper waterproofing is essential.
Alta-Cal Roofing provides professional walking deck waterproofing solutions for residential and commercial properties throughout Hollister and the surrounding California communities we serve. We install durable deck systems designed to create an attractive, walkable surface while helping protect the structure underneath from moisture intrusion.
For plywood walking decks, balconies, and roof decks, we offer the Westcoat ALX™ Waterproofing System, a reinforced waterproof deck system designed specifically for demanding exterior applications.
Explore Our Walking Deck Options
Alta-Cal Roofing creates unique custom walking decks for all kinds of properties in Hollister, CA and beyond. These include:
Residential Walking Decks
You may not have enough outdoor space to do whatever you want—from hosting parties or small gatherings to relaxing—but your roof has potential to give you the space you want. All you need is a custom residential walking deck designed by Alta-Cal Roofing!
Commercial Walking Decks
We design and build walking decks that are built to handle whatever a business needs—and whatever its customers can throw at them. Our walking decks are made to withstand heavy foot traffic, inclement weather, and the long-term effects of being exposed to the California sun.
Westcoat ALX™ Waterproof Walking Deck Systems
Alta-Cal Roofing uses Westcoat ALX for qualifying plywood deck applications where homeowners and property owners need a surface capable of combining waterproofing with everyday foot traffic.
The ALX system is formulated specifically for plywood surfaces and combines acrylic resins and cement blends with reinforcing lath. The system helps eliminate plywood seams and creates a durable continuous surface suitable for heavy-traffic areas.
Westcoat ALX Standard is installed using three separate polymer-modified cementitious applications over reinforced glass or galvanized metal lath. The finished system is then sealed with an acrylic topcoat.
The result is a walking surface designed to provide both waterproofing protection and long-term durability.
Where Can the Westcoat ALX System Be Used?
The versatility of the Westcoat ALX system makes it an excellent option for a variety of residential and commercial applications, including:
- Walking decks
- Roof decks
- Balconies
- Exterior walkways
- Apartment and multifamily balconies
- Elevated outdoor living areas
- Exterior stairs and landings
- Commercial pedestrian areas
Whether you're creating an outdoor living space at your home or protecting a heavily traveled walkway at a commercial or multifamily property, Alta-Cal Roofing can evaluate the area and determine whether a Westcoat ALX waterproof deck system is appropriate for the application.
A Waterproof Deck System Designed for Plywood Surfaces
A walking deck isn't simply an outdoor floor. When the deck is located above living space, another unit, a garage, or another part of the building, it also needs to help prevent water from reaching the structure below.
That's where a complete waterproofing system becomes especially important.
Westcoat ALX is specifically formulated for plywood substrates. Reinforcement is incorporated into the system before multiple polymer-modified cementitious applications and an acrylic topcoat are applied.
This layered approach creates a seamless waterproof walking surface while providing the durability needed for exterior foot traffic.
Built for California Conditions
California walking decks can be exposed to intense sunlight, changing temperatures, rain, moisture, and regular foot traffic. The waterproofing system needs to withstand those conditions while protecting the underlying structure.
Westcoat ALX offers several important performance characteristics. The system:
- Is IAPMO evaluated under ER-587
- Meets the Class A fire test requirements of ASTM E-108
- Meets the one-hour fire rating requirements of ASTM E-119
- Meets applicable City of Los Angeles LARC and LABC requirements
- Complies with Wildland Urban Interface requirements
These characteristics make ALX especially relevant for California properties where waterproofing, durability, and fire performance may all be important considerations.
Residential Walking Deck Waterproofing
A waterproof walking deck can transform an otherwise underused exterior area into functional outdoor living space.
Homeowners may use walking decks and rooftop decks for seating, entertaining, enjoying the outdoors, or simply adding another usable area to the home.
But the surface needs to do more than look good.
Alta-Cal Roofing installs walking deck systems with the underlying structure in mind. Proper waterproofing helps protect the plywood substrate and areas below the deck while creating a finished surface capable of handling regular pedestrian traffic.
Westcoat ALX can be an excellent solution for qualifying residential:
- Balconies
- Rooftop decks
- Walking decks
- Exterior walkways
- Elevated patios
- Stairs and landings
Our team can inspect your property, discuss how the space will be used, and recommend an appropriate waterproofing solution.
Commercial & Multifamily Walking Decks
Waterproofing becomes even more important when walking surfaces receive frequent pedestrian traffic.
Apartment buildings, hotels, offices, retail properties, and other commercial buildings may have exterior walkways, balconies, decks, and stairs that are exposed to both weather and repeated use.
The Westcoat ALX system is designed for heavy-traffic applications, making it a strong option for qualifying commercial and multifamily properties.
Alta-Cal Roofing can provide walking deck waterproofing solutions for:
- Apartment complexes
- Multifamily buildings
- Hotels
- Office buildings
- Retail properties
- Commercial buildings
- Exterior corridors and walkways
- Balconies and roof decks
A properly installed waterproof system can help protect the structure while providing a durable surface for residents, employees, customers, and visitors.
Why Waterproofing Your Walking Deck Matters
Water intrusion can create problems that extend well beyond the deck's visible surface.
When moisture finds its way through cracks, seams, penetrations, or deteriorated waterproofing, it may eventually reach the plywood and structural components underneath.
Over time, that can contribute to deterioration and potentially more extensive repairs.
A professionally installed waterproof deck system creates a continuous protective surface intended to keep water away from the underlying structure.
That's particularly important for decks and balconies located over occupied or enclosed spaces.
What Are the Signs a Walking Deck Needs Attention?
Not every deck problem is immediately obvious. Consider having your walking deck or balcony inspected if you notice:
- Cracks in the deck surface
- Peeling, bubbling, or deteriorating coatings
- Soft or uneven areas
- Standing water
- Stains or discoloration
- Water leaking into the area below
- Damage around drains
- Deterioration near walls or flashing
- Problems around railings or penetrations
- An aging waterproofing system
Addressing potential waterproofing problems early may help prevent moisture from causing more extensive damage underneath the deck.
Details Matter in Walking Deck Waterproofing
Successful deck waterproofing isn't only about covering the large, flat portion of the deck.
Water can potentially enter around transitions and penetrations, which makes proper detailing an essential part of a waterproof deck system.
Depending on the deck configuration, the Westcoat ALX system provides details for areas such as deck edges, wall-to-deck transitions, inside and outside corners, deck drains, railings, thresholds, stairs, scuppers, and posts.
Alta-Cal Roofing will evaluate these critical areas when determining the right approach for your walking deck.
Why Choose Alta-Cal Roofing for Your Walking Deck?
Walking decks combine elements of roofing, waterproofing, drainage, and exterior construction. Choosing an experienced contractor is important because the finished surface needs to do more than withstand foot traffic—it needs to help keep water out of the structure below.
Alta-Cal Roofing brings decades of roofing and waterproofing experience to residential and commercial projects throughout our California service area.
When you work with us, you'll receive a solution based on your property's construction, condition, and intended use rather than a one-size-fits-all recommendation.
Walking Deck FAQs
What is a waterproof walking deck?
What is the Westcoat ALX system?
Can Westcoat ALX be used on roof decks?
Is Westcoat ALX suitable for areas with heavy foot traffic?
Can you waterproof an existing walking deck?
Why is waterproofing especially important for elevated decks?
How do I know if my walking deck needs to be repaired or recoated?
Get a Quote for Walking Deck Waterproofing
Protect your outdoor living or walking space with a waterproof deck system designed for lasting performance.
Alta-Cal Roofing provides professional walking deck solutions for homeowners, businesses, property managers, and multifamily properties in Hollister and throughout the surrounding California communities we serve.
Whether you need to waterproof a residential balcony, roof deck, exterior walkway, or commercial walking surface, our team can evaluate your property and help you determine the right solution.
Contact Alta-Cal Roofing today to schedule an evaluation and request a quote for your walking deck project.
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